A pharmaceutical is running a clinical trial to see if they should release a new drug they developed. They gave their new drug to 221 of the participants, and 201 recovered from the disease. They gave an existing (% of drug to patients treat that the same recover with disease new to 198 drug) - (% participants, of patients and 165 that recover patients with recovered. existing Find drug). a 95% What is confidence the lower interval endpoint for the of the difference interval?